Headlight



July 28, 1925.

w. B. JOHNSON HEADLIGHT 2 Sheets-Sheet 1 Filed May 26 r 1924 INVENTOR mm m w AITORNEYS w. B. JOHNSON July 28, 1925.

HEADLIGHT 2 Sheets-Sheet 2 I Filed May 26 \QW a. Z 4 7 7 v IINVENTOR'WBJOHNM WITNESSES ATTORNEYS Patented July 28, 1925.

PATENT OFFICE;

WILLIAM BiIANTON JOHNSON, OF LEXINGTON, KEI'PIPU'GKY.

HEADLIGHT.

{ pplication illed Kay 26, 1924. Serial life. 715,979.

To all whom it may concern.

Be it known that I, WILLIAM B. JOHNSON,

a citizen of the United States, and resident Of L ing on, i he county oFaye an State of Kentucky, have invented certaln new and usefulImprovements in Headlights, of which th following is a specificationThis invention relates t improvements in headlights for automobiles orother vehicles and it consists inthe combinations, constructions andarrangements herein described and claimed.

An object of the present invent on is provide an improved headlightwhich is adapted to project rags of-li ht from a source of lighttherewit in in a orward and downward direction, thus the illumination ofa roadway directly in front of the vehicle on which the headlight issupported without projecting glaring rays of light on approachingtraflic.

A further object of the invention 1s to provide a headlight of thecharacter described which is, adapted to diffuse rays of light projectedtherefrom in a forward and downward direction so that no upwardreflection which might tend to cause glare on the eyes of personsapproaching the vehicle provided with the headlights will result fromtheprojection of rays of light from the headlights on the roadway infront of the vehicle.

Other objects and advantages will be apparent. from the followingdescription, considered in conjunction with the accompanying drawings,in which Figure 1 is a front view of a headlight ems bodying theinvention,

Figure 2 is a longitudinal vertical central section through theheadlight, Y 40 Figure 3 is a section along the line 3-3 of Figure 2. t

Figure 4 is a sect-ion along the line 4-4 of Figure 2.

A headlight embodying the invention comprises an outer casing having asubstantially hemispherical rear end portion 1 formed with the wallsthereof elongated in a forward direction to provide a substantiallycylindrical extension 2 which is of relativel great length. Thecylindrical and hennforwar spherical portions of the casing are axiallyaligned with each other. The cylindrical extension 2 terminates at itsforward end in a plane which extends obli u y o the a s of the casing,as best seen in igure 2, the lowerll m t P nt on the cylind i xt nsionat the forward end of thelatter being located rearwardly-of theuppermost point of the ylindrical extension al the forward end of thelatter. A lens 3 which is ShOWll as being a ir ular gla Plat s s ur d aain the front end To? he cy n ca xt nsion 2 y a retaining ring 4 whichis secured the cylin ical extensi n in any suitable known ma er- A .ho 5is Prov d with an arcu- Q ate attaching flange 6 at its rearward endwhich overlaps the upper portion of the ring 4 andis secured to thelatter in any suitable known manner, as by means of rivets, not shown,or by welding. The bodywof the hood 5 is arcuate .in cross sectionalcontour and is curved forwardly and downwardly from its juncture withthe attaching flange 6 so that the inner wall ofthe body of the hoodwill overlie the space which is located directly at the front of thelower part of the cylindrical extension 2 and the 00d decreasesuniformlin cross sectional area from its lower en toward its upper end,the lower end of the hood being positioned slightly above thelongitudinal median line of the outer casing.

The headlight includes. an inner casin which com rises a rearward endportion g which con orms substantially to the shape of the correspondingportion of th outer casing and is disposed within the latter, being incontact with the inner wall of the outer cash at the juncture of theportions 1 and 2 o the outer casing. The portion. 7 of the inner casingh s the walls of the upper part thereof elongated to provide a extension8 which is arcuate-in cross sectional contour and therefore conforms tothe curvature of the inner wall of the up- 9 .per portion of thecylindrical portion 2 of the outer casing. 'The extension 8 has theouter wall thereof in close contact with the inner wall of the upperportion of the cylindrical portion 2 of the outer casing. The

extension 8 terminates at its forward end flush with the correspondingportion of the cylindrical extension 2.

It will be observed that the extension 8 is located at the rear of theupper part of the hood 5 and that the lower edges of the extension 8 liein a horizontal plane which intersects the outer casing at aconsiderable distance above the axial line of the latter.

The portion 7 of the inner casing has the walls of the lower portionthereof extended in a forward and upward direction'to pro= vide aninclined lower forward extension 9.

The lower forward extension 9 is 'a'rcuate in cross sectional contour asbest seen Figure 3 and terminates at its side edges 1n contact with theinner wall of the outer casing along horizontal lines indicated at 10which lie in a horizontal plane located at a level lower than that ofthe longitudinal median line of the outer casing. A substantiallyvertical extension 11 u pstanding from the forward end of the extension9 intermediate the ends of the latter extends above the level of thelongitudinal median line of the outer casing.

The outer and light may be secured together in any sultable known manneras by means of rivets not shown, solder or by friction betweencontiguous parts of the casings. A socket 12 is provided at the axialline of the rearward end portions of the inner and outer casings for thereception of an electric light bulb 13 which thus is positioned withinthe inner casing centrally of the rearward end portion thereof.Conductorsas at 14 lead from the socket 12 through a central opening inthe rear end portions ofthe casing and may be connected electricallywith any suitable source of electric current supply.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. .The inner walls of theportions 7, 11, 9 and 8 of the inner casing and the body portion 5 ofthe hood serve as reflecting surfaces. Since the extension 11 extendsvertically above the level of the bulb 1-3, it will be manifest that thebright rays of "light from the bulb 13 cannot pass horizontally forwardfrom the headlight.

It thus will be manifest that the blinding of approaching traflicbecause of. the jection of bright or glaring light rays in a straightforward direction is entirely obviated when a headlight embodying thepresent invention is employed. The .rays of light from the bulb 13 willbe r flected up-. wardly and forwardly by the 10 er portion of thereflector 7 and by the reflector 9 against the upper portion of thereflector 7 the reflector 8 and the reflector 5 and thence in aforwardand downwarddirection upon the roadway in front of a vehicle on whichinner casings of the hea d- J causing any glare or upward reflection oflight rays from the roadway.

All interior walls of the headlight which do not have reflectingsurfaces as pointed out in the foregoing will be covered with a paintwhich has non-reflecting qualities.

If desired, the lens 3 may be colored in any suitable known manner ormade of frosted glass or other suitable translucent material.

Obviously, my invention is susceptible of embodiment in forms other thanthat illustrated in the-accompanying drawings and I therefore consideras my own all such modifications and adaptations as fairly fall withinthe scope of the appended claims.

I claim I 1. A headlight comprising an elongated casin closed at one ofits ends by an in tegra portion of the casing, a lensconstitutingaplosure for the other end of the casing, a reflector havinga body portion disposed within the first named end portion of the casingand being concave-convex, the first named end portion of the reflectorhaving a forward extension to its upper part and a separate forwardextension to its lower part, the forward extension to its upper partterminating above the level of the longitudinal median line of thecasing and the forward extension of the lower part of the body of saidreflector being upwardly and forwardly inclined, means for supporting alight emitting element within said first named portion of the reflectorcentrally thereof, and a vertical shield carried at the forward end ofthe extension to the lower part of the body of the reflector, saidshield being disposed directly in front of said light emitting elementand comprising an upstanding extension at the front edge of the lowerforward portion of the reflector midway of the width of the reflector.

2. A headlight comprising an elongated casin closed at one of its endsby an integra portion of the casing, a lens constituting a closure forthe other end of the casing, a reflector having a body portion disposedwithin the first named end portion of the casing and beingconcavo-convex, the first named end portion of the-reflector having aforward extension to its upper part and a separate forward extension toits lower part, the "forward extension to its upper part terminatingabove the level of the longitudinal median line of the casing and theforward extension of the lower part of the body of said reflector beingupwardly and forwardly inclined, means for supporting a light emittingelement within said first named portion of the reflector centrallythereof,- a vertical shield carried at the forward end of the extension.to the v lower part ofthe body of the reflector, said shield beingdisposed directly in front of said light emitting elementand comprisingan upstanding extension at the front edge of the lower forward portionof the reflector midway of the width of the reflector, and a 10 hoodcarried by said casing, said hood being inclined downwardly from theupper part of the second named end of the casing and having the innerwall thereof adapted to serve as a reflector.

WILLIAM BLANTON JOHNSON.

